Structural properties of (Nd0.33Eu0.2Gd0.47)Ba2Cu3Oy studied by magnetic and infrared measurements

被引：1

作者：

Rames, M. ^{[1
]}

Zelezny, V. ^{[1
]}

Phuoc, V. Ta ^{[2
]}

Gervais, F. ^{[2
]}

Wolf, T. ^{[3
]}

Jirsa, M. ^{[1
]}

机构：

[1] Inst Phys AS CR, Na Slovance 2, CZ-18221 Prague 8, Czech Republic

[2] Univ F Rabelais, UFR Sci, F-37200 Tours, France

[3] Forschungszentrum Karlsruhe, Inst Solid State Phys, D-76021 Karlsruhe, Germany

来源：

9TH EUROPEAN CONFERENCE ON APPLIED SUPERCONDUCTIVITY (EUCAS 09) | 2010年 / 234卷

关键词：

TEMPERATURE SUPERCONDUCTOR; TRANSITION; FIELDS;

D O I：

10.1088/1742-6596/234/1/012032

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Reflectance of a single crystal of the (Nd0.33Eu0.2Gd0.47)Ba2Cu3Oy superconductor was measured as a function of frequency from 35 to 8000 cm(-1) and for temperatures from 10 to 300 K. The Kramers-Kronig analysis with appropriate extrapolations was used to calculate response functions. The AC conductivity displays phonons at frequencies typical for the whole family of REBa2Cu3Oy cuprates. The Drude term is rather low in comparison to optimally doped cuprates. The spectra were fitted to study temperature dependence of their parameters. DC electrical conductivity and magnetization were measured using a four-probe technique and a vibrating sample magnetometer, respectively. The remnant J(c) reached 21.0 kA/cm(2), Jc at the secondary peak was 20.0 kA/cm(2) at 2.0 T.

引用

页数：6

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